Find the smallest prime which can be represented as sum of a prime and its reversal.

Clearly, if one wants to solve it

*at first glance*, - one would begin testing numbers of a

**2?1** structure by choosing a prime one and then trying

**2?1*****1****?2 - **if it's prime - stop. Solved.

No - continue with

**2?7**.

Ok: 201 not a prime; 211+112=323 not a prime; 221+122=343 not a prime; 231 not a prime; 241+142= a **prime number**, smallest, **ANSWER.**

Conclusion - it always pays to try the "guessing process" at least for a while.